Sock lock



FIG. 1 is a front perspective view of a pair of socks showing my new sock lock design, a rear perspective view being a mirror image;

FIG. 2 is a top plan view of the sock lock showing my new design; and,

FIG. 3 is a front perspective view of a pair of socks joined together by my sock lock design. 

The ornamental design for a sock lock, as shown and described. 